Does Copper's Young's Modulus Remain Constant When Stretched?

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SUMMARY

Copper's Young's Modulus remains constant within the elastic range when the material is stretched. The modulus, defined as the slope of the stress-strain curve, represents the stiffness of the material. However, once the elastic limit is surpassed, the Young's Modulus will no longer remain constant. A stress-strain diagram is essential for visualizing these properties and understanding the relationship between stress and strain in copper.

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  • Understanding of Young's Modulus and its significance in material science.
  • Familiarity with stress-strain diagrams and their interpretation.
  • Basic knowledge of elastic and plastic deformation in materials.
  • Concept of elastic limit and its implications on material properties.
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  • Research the stress-strain curve specific to copper and its characteristics.
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Material scientists, mechanical engineers, and students studying material properties and mechanics of solids will benefit from this discussion.

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when the copper is stretched,does its young modules keep constant?
I am confused because the area will be decreased and the young modules is just related to the the material.
 
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Do you have a stress-strain diagram for copper? The modulus is the relation between the two (it is the slope of the plot). In other words, the modulus is the stiffness. When stretched, it will remain constant for a certain range (the elastic range). Once it passes that limit, it will not remain constant.

Generic Stress-Strain Curve:
StressStrainCurve.gif
 
Last edited:
FredGarvin said:
Do you have a stress-strain diagram for copper? The modulus is the relation between the two (it is the slope of the plot). In other words, the modulus is the stiffness. When stretched, it will remain constant for a certain range (the elastic range). Once it passes that limit, it will not remain constant.

Generic Stress-Strain Curve:
StressStrainCurve.gif
thx!The mind is clear now,but I don't under stand the lower half diagram
 

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